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1. 发明授权

US4793693A Ferro-electric liquid crystal electro-optical device having a drive voltage with DC and chopping components 失效
标题翻译：具有驱动电压为DC和斩波元件的铁电液晶电光器件
公开(公告)号：US4793693A
公开(公告)日：1988-12-27
申请号：US20694
申请日：1987-03-02
申请人： Sadashi Shimoda , Takamasa Harada , Masaaki Taguchi , Kokichi Ito
发明人： Sadashi Shimoda , Takamasa Harada , Masaaki Taguchi , Kokichi Ito
IPC分类号： G02F1/1337 , G02F1/133 , G09G3/18 , G09G3/36 , G02F1/13
CPC分类号： G09G3/3692 , G09G3/3629 , G09G3/3681 , G09G2310/06
摘要： A ferro-electric crystal electro-optical device which uses switching between bi-stable states of ferro-electric liquid crystal molecules. A change from one of the stable states to the other is effected by applying a selected voltage having a combination of chopping pulse to which the liquid crystal molecules are not responsive and DC pulse to which the liquid crystal molecules are responsive.
摘要翻译：一种使用铁电液晶分子的双稳态之间切换的铁电晶体电光装置。通过施加具有液晶分子不响应的斩波脉冲的组合的选定电压和液晶分子响应的直流脉冲来实现从稳定状态之一到另一稳定状态的变化。

2. 发明授权

US4762400A Ferroelectric liquid crystal electro-optical device having half-select voltage to maximize contrast 失效
标题翻译：铁电液晶电光器件具有半选择电压以最大化对比度
公开(公告)号：US4762400A
公开(公告)日：1988-08-09
申请号：US54739
申请日：1987-05-27
申请人： Sadashi Shimoda , Takamasa Harada , Masaaki Taguchi , Kokichi Ito
发明人： Sadashi Shimoda , Takamasa Harada , Masaaki Taguchi , Kokichi Ito
IPC分类号： G02F1/133 , G09G3/36 , G02F1/13
CPC分类号： G09G3/3629
摘要： A ferroelectric liquid crystal electro-optical device driven in time-sharing comprising; a ferroelectric liquid crystal layer having bi-stable alignment characteristics, means for converting the bi-stable alignment state to optical ON state or optical OFF state, a matrix electrode and means for driving the liquid crystal layer by applying voltages to the liquid crystal layer through the matrix electrode. A voltage sufficient to change a stable alignment state of the ferro-electric liquid crystal molecular is applied to a selected pixel, a voltage insufficient to change a stable alignment state is applied to a non-selected pixel and an AC voltage for holding a stable alignment state is applied to a half-selected pixel. A bias value, which is the ratio of the amplitude of the voltage applied to the selected pixel to the amplitude of the AC voltage applied to the half-selected pixel, is set near the maximum value of B satisfying the following formulaB/(B-2).gtoreq.Vsat/Vth,wherein Vsat is the minimum value of voltage which enables to change a stable alignment state to the other state and Vth is the maximum value of voltage which enables to hold the stable alignment state.
摘要翻译：分时驱动的铁电液晶电光装置，包括：具有双稳定取向特性的铁电液晶层，用于将双稳态取向状态转换为光ON状态或光关闭状态的装置，矩阵电极和通过向液晶层施加电压驱动液晶层的装置，通过矩阵电极。对所选择的像素施加足以改变铁电液晶分子的稳定取向状态的电压，将不足以改变稳定取向状态的电压施加到未选择的像素和用于保持稳定取向的AC电压状态被应用于半选择的像素。将施加到所选像素的电压的幅度与施加到半选择像素的AC电压的幅度的比率的偏置值设定为接近满足以下公式B /（B）的B的最大值 -2）> = Vsat / Vth，其中Vsat是能够将稳定取向状态改变为另一状态的电压的最小值，Vth是能够保持稳定取向状态的电压的最大值。

3. 发明授权

US4662721A Ferro-electric liquid crystal electro-optical device 失效
标题翻译：铁电液晶电光装置
公开(公告)号：US4662721A
公开(公告)日：1987-05-05
申请号：US750092
申请日：1985-06-28
申请人： Takamasa Harada , Masaaki Taguchi , Kokichi Ito
发明人： Takamasa Harada , Masaaki Taguchi , Kokichi Ito
IPC分类号： G02F1/1337 , G02F1/141 , G02F1/13
CPC分类号： G02F1/133711 , G02F1/141
摘要： A ferro-electric liquid crystal electro-optical device comprising two plates having electrodes, and ferro-electric liquid crystals, for example, chiral smetic crystals, sandwiched between the plates. The inner surface of one of the two plates has a uni-axial alignment characteristic which aligns the liquid crystal molecules in its uni-axial direction. The inner surface of the other plate has a random homogeneous characteristic which aligns the molecules nearly parallel to the plates but does not let the molecules have any predetermined directional characteristic.
摘要翻译：一种铁电液晶电光装置，包括具有电极的两个板和夹在板之间的铁电液晶，例如手性硅晶体。两个板之一的内表面具有使液晶分子在其单轴方向上对准的单轴对准特性。另一个板的内表面具有随机均匀的特征，其使分子几乎平行于板对准，但不会使分子具有任何预定的方向特性。

4. 发明授权

US4989955A Liquid crystal electro-optical element and process for preparation thereof 失效
标题翻译：液晶电光元件及其制备方法
公开(公告)号：US4989955A
公开(公告)日：1991-02-05
申请号：US267704
申请日：1988-11-04
申请人： Kokichi Ito , Takamasa Harada , Koichiro Oka , Hiroyuki Ikeuchi
发明人： Kokichi Ito , Takamasa Harada , Koichiro Oka , Hiroyuki Ikeuchi
IPC分类号： C08G59/18 , C08J3/16 , C09J163/00 , G02F1/133 , G02F1/1339
CPC分类号： C08J3/16 , C08G59/188 , C09J163/00 , G02F1/13392 , C08J2363/00 , Y10S359/90
摘要： In an electro-optical element comprising a liquid crystal, such as a smectic liquid crystal, sealed between two substrates arranged to confront each other with a space of an order of .mu.m, if spacer particles for regulating the space between the substrates and phenol type curing agent-incorporated epoxy resin adhesive particles for moderating stresses generated by distortions or warps of the substrates are arranged in the space between the substrates, a minute uniform space, especially a uniform space of 1 to 3 .mu.m effective for a ferroelectric liquid crystal, can be maintained between the substrates. In this structure, alignmental films are not disturbed at all. Furthermore, even if a nematic or super-twist liquid crystal is used, a uniform space can be stably maintained between the substrates.
摘要翻译：在包含液晶的液晶的电光元件中，例如密闭在两个基板之间的两个基板之间，以间隔为μm的空间密封，如果用于调节基板之间的空间的间隔颗粒和酚型固化剂结合的环氧树脂粘合剂颗粒用于调节由基板的变形或翘曲产生的应力，在基板之间的空间中布置有微小的均匀空间，特别是对铁电液晶有效的1〜3μm的均匀空间，可以保持在基板之间。在这种结构中，对准膜完全不受干扰。此外，即使使用向列或超扭曲液晶，也可以在基板之间稳定地保持均匀的空间。

5. 发明授权

US4939003A Liquid crystal element 失效
标题翻译：液晶元件
公开(公告)号：US4939003A
公开(公告)日：1990-07-03
申请号：US147202
申请日：1988-01-22
申请人： Takao Aoki , Takamasa Harada , Kokichi Ito , Koji Iwasa , Norio Kawabe , Hiroyuki Ikeuchi
发明人： Takao Aoki , Takamasa Harada , Kokichi Ito , Koji Iwasa , Norio Kawabe , Hiroyuki Ikeuchi
IPC分类号： G02F1/1337
CPC分类号： G02F1/133711 , Y10T428/1077
摘要： Disclosed is a liquid crystal element with an improved orientation layer and a coating composition for forming such an orientation layer. The orientation layer consists essentially of a polymer with a Mark-Houwink coefficient of not less than 0.85, the Mark-Houwink coefficient being represented by the formula [I]:[.eta.]=K.multidot.M.sup..alpha. [I]wherein [.eta.] represents intrinsic viscosity of the polymer determined by solution viscosity measuring method, K represents a constant, M represents molecular weight of the polymer, and .alpha. represents the Mark-Houwink coefficient. The coating composition comprises a polyfumaric acid ester represented by the formula [I]: ##STR1## wherein R.sup.1 and R.sup.2, are the same or different and each represents a straight or branched alkyl group, cycloalkyl group, haloalkyl group, silalkyl group or siloxanylalkyl group; and a halogen-containing organic solvent.

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